2Z7X

Crystal structure of the TLR1-TLR2 heterodimer induced by binding of a tri-acylated lipopeptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.244 
  • R-Value Observed: 0.244 

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Literature

Crystal Structure of the TLR1-TLR2 Heterodimer Induced by Binding of a Tri-Acylated Lipopeptide

Jin, M.S., Kim, S.E., Heo, J.Y., Lee, M.E., Kim, H.M., Paik, S.G., Lee, H., Lee, J.O.

(2007) Cell 130: 1071-1082

  • DOI: 10.1016/j.cell.2007.09.008
  • Primary Citation of Related Structures:  
    2Z7X, 2Z80, 2Z81, 2Z82

  • PubMed Abstract: 

    • TLR2 in association with TLR1 or TLR6 plays an important role in the innate immune response by recognizing microbial lipoproteins and lipopeptides. Here we present the crystal structures of the human TLR1-TLR2-lipopeptide complex and of the mouse TLR2-li ...

    TLR2 in association with TLR1 or TLR6 plays an important role in the innate immune response by recognizing microbial lipoproteins and lipopeptides. Here we present the crystal structures of the human TLR1-TLR2-lipopeptide complex and of the mouse TLR2-lipopeptide complex. Binding of the tri-acylated lipopeptide, Pam(3)CSK(4), induced the formation of an "m" shaped heterodimer of the TLR1 and TLR2 ectodomains whereas binding of the di-acylated lipopeptide, Pam(2)CSK(4), did not. The three lipid chains of Pam(3)CSK(4) mediate the heterodimerization of the receptor; the two ester-bound lipid chains are inserted into a pocket in TLR2, while the amide-bound lipid chain is inserted into a hydrophobic channel in TLR1. An extensive hydrogen-bonding network, as well as hydrophobic interactions, between TLR1 and TLR2 further stabilize the heterodimer. We propose that formation of the TLR1-TLR2 heterodimer brings the intracellular TIR domains close to each other to promote dimerization and initiate signaling.

    Organizational Affiliation: 

    Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejon, Korea 305-701.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Toll-like receptor 2, Variable lymphocyte receptor B A549Homo sapiens, Eptatretus burgeri
This entity is chimeric		Mutation(s): 0 
Gene Names: TLR2, TIL4, VLRB
EC: 3.2.2.6
Find proteins for O60603 (Homo sapiens)
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Go to UniProtKB:  O60603
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PHAROS:  O60603
GTEx:  ENSG00000137462
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Toll-like receptor 1, Variable lymphocyte receptor B B520Homo sapiens, Eptatretus burgeri
This entity is chimeric		Mutation(s): 0 
Gene Names: TLR1, KIAA0012, VLRB
EC: 3.2.2.6
Find proteins for Q15399 (Homo sapiens)
Explore Q15399 
Go to UniProtKB:  Q15399
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PHAROS:  Q15399
GTEx:  ENSG00000174125
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Pam3CSK4 C5synthetic constructMutation(s): 0 
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  • Reference Sequence
Oligosaccharides

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Entity ID: 4
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
D
3 N-Glycosylation Oligosaccharides Interaction
Entity ID: 5
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E
3 N-Glycosylation Oligosaccharides Interaction
Entity ID: 6
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
F
3 N-Glycosylation Oligosaccharides Interaction
Entity ID: 7
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
G
2 N/A Oligosaccharides Interaction
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PCJ
Query on PCJ
Download Ideal Coordinates CCD File 
C
(2R)-3-{[(2S)-3-HYDROXY-2-(PALMITOYLAMINO)PROPYL]THIO}PROPANE-1,2-DIYL DIHEXADECANOATE
C54 H105 N O6 S
GBQDHEZHWNJSLG-OKPYTHRESA-N		 Ligand Interaction
NAG
Query on NAG
Download Ideal Coordinates CCD File 
A, B
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.244 
  • R-Value Observed: 0.244 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 200.303α = 90
b = 120.14β = 90
c = 74.12γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
CNSrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-10-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.2: 2017-08-16
    Changes: Advisory, Refinement description, Source and taxonomy
  • Version 1.3: 2017-08-23
    Changes: Source and taxonomy
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary